Barlow, David H., author
Brooks/Cole, 1995
Buku Teks
Barlow, David H., author
Thomson , 2005
Buku Teks
Barlow, David H., author
Connecticut Cengage Learning, 2015
Buku Teks
Clerq, Linda de, author
Grasindo , 1994
Buku Teks
Santogrossi, David A.
Brooks/Cole, 1995
Buku Teks